spencer quarries

What spencer quarries does

Spencer Quarries is a South Dakota-based producer of aggregates and asphalt operating two divisions: Spencer Quarry, located in Spencer, SD, and Commercial Asphalt in Mitchell, SD, the latter acquired in 1992 and forming a vertically integrated offering alongside the original aggregates business. The company was incorporated in 1944 and produces quartzite aggregates, sand, gravel, and asphalt mix serving cities, counties, state DOTs, commercial contractors, and individual households across South Dakota, Nebraska, and the broader Midwest.

Production runs through a combination of fixed-site quarry and asphalt plant operations and a fleet of portable crushing plants deployable within a roughly 250-mile service radius. Recent capital expenditure has added new rock crushers, grizzly feeders, screens, and conveyor infrastructure, indicating a modernized and expanding production base rather than passive maintenance. The portable plant model is central to the operating strategy, allowing the company to serve remote or project-specific jobs beyond the catchment of fixed plants and to compete on logistics in regions where haul distance is decisive.

The commercial model is per-ton FOB pricing across a wide product SKU range (approximately $8.50–$170/ton), with rates posted publicly and customer mix split between public-sector infrastructure buyers and private commercial or retail demand. No external funding, private equity sponsorship, or institutional capital structure is disclosed; the business appears to operate as a privately held, family/operator-managed regional producer with open hiring across quarry operations, asphalt division management, and aggregate sales functions.

Name

spencer quarries

Legal name

Spencer Quarries, Inc.

Website

https://spencerquarriesinc.com

Company type

Private

Founded year

1944

Operating status

Operating

Short description

Spencer Quarries is a South Dakota-based aggregates and asphalt producer operating two divisions (Spencer Quarry and Commercial Asphalt) that serves DOTs, municipalities, contractors, and households across SD, NE, and the Midwest via fixed and portable plant operations.

Ownership category

akta.pro rank

Product category

Construction Aggregates and Asphalt Materials

NAICS

Nonmetallic Mineral Mining and Quarrying (2123), Other Crushed and Broken Stone Mining and Quarrying (212319), Construction Sand and Gravel Mining (212321), Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying (21232)

SIC

Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400), Asphalt Paving & Roofing Materials (2950)

akta.pro primary industry

Crushed Stone Quarrying & Processing (IMAKAHAA)

akta.pro secondary industries

Other Dimension Stone (Slate, Sandstone, Quartzite, Travertine) Quarrying & Fabrication (IMAKAHAF), Sand & Gravel Extraction & Processing (IMAKAHAB), Specialty Aggregates (Rail Ballast, Riprap/Armor Stone, Gabion Stone) (IMAKAHAJ), Construction Aggregates Mining & Processing (Sand, Gravel, Crushed Stone) (IMADAAAI), Rock Excavation, Blasting & Quarry-Assist Works (IMAFAKAE)

Keywords

• Aggregate production
• Asphalt paving services
• Quartzite quarrying
• Construction materials supply
• Gravel and sand supply

Headquarters

HQ city

Spencer

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Operations, Infrastructure, Personnel, Supply Chain, Marketing or Sales

Revenue model

1. Aggregate Product Sales: Sale of quarry products including quartzite aggregates, sand, gravel, rip rap, and various rock sizes. Products can be delivered or picked up by customers. Pricing is per ton with variations by product type and pit location.
2. Asphalt Product Sales: Sale of hot mix, patch mix, and omega mix (wintertime mix) asphalt products to state and private projects. Also includes gravel work, flush sealing, chip sealing, patching, and asphalt paving services.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels1 record

Core offering

Spencer Quarries Inc. operates two divisions—Spencer Quarry in Spencer, SD and Commercial Asphalt in Mitchell, SD—that extract and process quartzite into aggregates, sand, gravel, ballast, and rip rap, and produce hot mix, patch mix, and omega mix asphalt alongside paving, chip sealing, and patching services. Customers include cities, counties, Departments of Transportation, commercial builders, and individual households across South Dakota and into Nebraska, served within roughly 250 miles of Mitchell.

Product overview

Spencer Quarries Inc. operates two core divisions under a unified parent company: Spencer Quarry in Spencer, SD and Commercial Asphalt in Mitchell, SD. Spencer Quarry specializes in extracting and processing quartzite aggregates including various rock sizes, ballast, concrete and asphalt aggregates, railroad ballast, and rip rap for construction projects. Commercial Asphalt provides asphalt paving services, gravel work, and sells hot mix, patch mix, and omega mix asphalt products. The company serves city and county governments, DOTs, businesses, and individual customers across South Dakota and into Nebraska. Incorporated in 1944, the company has over 100 years of industry experience.

Differentiator

Problem solved

Functional benefit

Products and services

• Spencer Quarry Quartzite Aggregates Extraction and processing of quartzite rock from a 35-acre pit at approximately 135 feet of depth, producing high-quality aggregates for concrete, asphalt, railroad ballast, and rip rap, including asphalt aggregate, concrete aggregate, seal coat chips, manufactured sand, bridge deck aggregate, railroad ballast, and Classes A through D rip rap.
• Commercial Asphalt Products and Paving Services Asphalt production and paving services from one stationary plant and three portable plants, including hot mix, patch mix, and omega mix asphalt sold to state and private projects, plus gravel work, flush sealing, chip sealing, patching, and asphalt paving services across South Dakota and into Nebraska.
• Gravel Products Gravel products sourced from multiple pit locations including Kurtz Pit, Nebelsick Pit, Marquardt Pit, Bussmus Pit, Ryks Pit, and Box Factory, priced from $8.50 to $13.50 per ton FOB sites, with crushed concrete and 50/50 blend options.
• Hot Mix Asphalt Hot mix asphalt sold at $83.00 per ton FOB Mitchell Plant Site and $100.00 per ton FOB North Star Plant Site, with specialized Patch Mix at $120.00 per ton and Omega Mix at $170.00 per ton.
• Quarry Aggregate Products Comprehensive range of quarry aggregate products including rock sizes (10-12", 8-10", 4-6", 2-3"), ballast, concrete rock, Nebraska rock, base courses, mixed aggregates, chips, sand, and Class A through E rip rap including hand picked rip rap, available for delivery or customer pickup.

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Pete Lien & Sons: Family-owned producer of aggregates, ready-mix concrete, asphalt, and lime based in Rapid City, SD, with operations throughout the Black Hills and Wyoming. Directly comparable regional aggregate and asphalt competitor to Spencer Quarries in the Dakotas.
• L.G. Everist: Fourth-generation, family-owned producer of quarried stone, sand, gravel, and related construction materials headquartered in Sioux Falls with operations across the Upper Midwest. Closely comparable privately held regional aggregates producer serving similar DOT and commercial customers.
• Central Stone Company: Family-owned aggregate producer based in Missouri with multiple quarries producing crushed stone, agricultural lime, and related materials. Comparable mid-sized, privately held crushed-stone operator serving DOT, commercial, and agricultural customers.
• Luck Stone: Privately held crushed stone and aggregate producer operating across the Mid-Atlantic and Southeast, serving DOT, commercial, and residential customers. Closely aligned mid-sized private aggregates peer with similar per-ton pricing and customer mix.
• Knife River Corporation: Aggregates-focused construction materials and paving company operating across the Western and Midwestern U.S., recently taken public. Closely aligned aggregates-and-asphalt peer with similar DOT/government customer mix and portable-plant operating model.

Broad incumbents

• Summit Materials: Public aggregates, cement, and paving company operating across the U.S. with both stationary and portable asphalt operations. Larger, multi-regional incumbent operating in the same materials categories as Spencer Quarries but at national scale.
• Martin Marietta Materials: Large public aggregates and heavy building materials producer with operations across the U.S. Serves DOT, commercial, and residential customers with crushed stone, sand, gravel, and asphalt — the broadest public-market comparable for the same end products.
• Vulcan Materials Company: Largest U.S. producer of construction aggregates (crushed stone, sand, gravel) and asphalt paving mix, with nationwide operations. The benchmark public aggregates incumbent against which regional private operators like Spencer Quarries are typically valued.
• Granite Construction: Public infrastructure contractor and construction materials producer with aggregate quarries and asphalt plants, primarily in the West and Midwest. Comparable materials-categories peer (aggregates + asphalt paving) with broader vertically integrated contracting exposure.

Regional players

• Croell Redi Mix: Family-owned concrete, aggregate, and asphalt producer based in Iowa with operations across the Midwest. Comparable mid-sized privately held regional aggregate and concrete/asphalt peer, primarily competing in adjacent Midwest geographies.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/spencer-quarries-inc.

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about spencer quarries